Free to list, always.No paid rankings. Every recommendation explains its trade-offs.
OpenSourceChoice
Submit a project
OpenSourceChoice

Open-source projects tagged “Library”.

Inspect repositories, licenses, activity, and alternatives across the Library ecosystem.

12 projects connectedTag matches come from repository topics and catalog metadata.
React
United StatesMIT

The library for web and native user interfaces.

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.4 projects#JavaScriptProjects tagged with this topic in the verified catalog.1 projectdeclarativeProjects tagged with this topic in the verified catalog.1 projectfrontendProjects tagged with this topic in the verified catalog.1 project
Metrics syncingMetrics syncingStar momentum for this project has not landed in the latest GitHub metrics sync yet. Check trending for repositories with recorded momentum.Browse trending →
FreePricingFree and open sourceFree246.7K51.2K7 hours ago
Open sourceIndependent project
Leaflet
ItalyBSD-2-Clause

An open-source JavaScript library for mobile-friendly interactive maps

Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.4 projects#webProjects tagged with this topic in the verified catalog.6 projectsgeographic-information-systemsProjects tagged with this topic in the verified catalog.1 projectWebDocumented runtime or deployment platform for this open-source project.6 projects
ITIT - Developers ItaliaFederated from IT - Developers Italia (Italy) in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Geographic Information SystemsStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
45.3K93/100Vitality 93/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
Apache PDFBox
Apache-2.0

Mirror of Apache PDFBox

Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.4 projects#JavaProjects tagged with this topic in the verified catalog.1 projectcontentProjects tagged with this topic in the verified catalog.1 projectjavaProjects tagged with this topic in the verified catalog.1 project
Metrics syncingMetrics syncingStar momentum for this project has not landed in the latest GitHub metrics sync yet. Check trending for repositories with recorded momentum.Browse trending →
FreePricingFree and open sourceFree3.1K9583 days ago
Open sourceIndependent project
21st.dev
MIT

Open-source collection of stunning Components built with Tailwind CSS, shadcn/ui and Motion to use on your websites

Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.4 projects#TypeScriptProjects tagged with this topic in the verified catalog.1 projectcomponentsProjects tagged with this topic in the verified catalog.1 projectframer-motionProjects tagged with this topic in the verified catalog.1 project
Metrics syncingMetrics syncingStar momentum for this project has not landed in the latest GitHub metrics sync yet. Check trending for repositories with recorded momentum.Browse trending →
FreePricingFree and open sourceFree1.9K1168 days ago
Open sourceIndependent project
Comunica
BelgiumMIT

A knowledge graph querying framework for JavaScript supporting SPARQL and GraphQL over decentralized RDF on the Web.

Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.4 projects#webProjects tagged with this topic in the verified catalog.6 projectsdata-analyticsProjects tagged with this topic in the verified catalog.3 projectsWebDocumented runtime or deployment platform for this open-source project.6 projects
BEBE - Open Code BelgiumFederated from BE - Open Code Belgium (Belgium) in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Data Analytics · Knowledge ManagementStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
57693/100Vitality 93/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
Jaffree
ItalyApache-2.0

Java ffmpeg and ffprobe command-line wrapper, supports programmatic video production and consumption (with transparency)

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.4 projects#webProjects tagged with this topic in the verified catalog.6 projectsvideo-editingProjects tagged with this topic in the verified catalog.1 projectWebDocumented runtime or deployment platform for this open-source project.6 projects
ITIT - Developers ItaliaFederated from IT - Developers Italia (Italy) in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Video EditingStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
54881/100Vitality 81/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
xmlschema
ItalyMIT

XML Schema validator and data conversion library for Python

Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.4 projects#linuxProjects tagged with this topic in the verified catalog.2 projectsdata-analyticsProjects tagged with this topic in the verified catalog.3 projectsLinuxDocumented runtime or deployment platform for this open-source project.2 projects
ITIT - Developers ItaliaFederated from IT - Developers Italia (Italy) in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Data Analytics · Data CollectionStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
47793/100Vitality 93/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
Bootstrap Italia
ItalyBSD-3-Clause-Clear

Bootstrap Italia è un tema basato su Bootstrap 5 conforme alle "Linee guida di design per i siti internet e i servizi digitali della Pubblica Amministrazione"

Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.4 projects#webProjects tagged with this topic in the verified catalog.6 projectswebsite-builderProjects tagged with this topic in the verified catalog.2 projectsWebDocumented runtime or deployment platform for this open-source project.6 projects
ITIT - Developers ItaliaFederated from IT - Developers Italia (Italy) in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Website Builder · Integrated Library SystemStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
35593/100Vitality 93/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
dsfr
FranceMIT

State Design System – DSFR

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.4 projects#science-and-technologyProjects tagged with this topic in the verified catalog.1 projectlibraryProjects tagged with this topic in the verified catalog.12 projectseu-ossProjects tagged with this topic in the verified catalog.7 projects
FRFR - Awesome CodeGouvFrFederated from FR - Awesome CodeGouvFr (France) in the EU Open Source Solutions Catalogue. Software type: Library.EU public-sector OSS
35193/100Vitality 93/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
OpenFisca Core
AGPL-3.0-or-later

The most widely adopted free and open-source engine to write rules as code

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.4 projects#webProjects tagged with this topic in the verified catalog.6 projectsotherProjects tagged with this topic in the verified catalog.1 projectWebDocumented runtime or deployment platform for this open-source project.6 projects
EUOtherFederated from Other in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Other · Regulations And DirectivesStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
23493/100Vitality 93/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
Design React Kit
ItalyBSD-3-Clause

The React toolkit compliant with the design guidelines for public administration websites and digital services.

Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.4 projects#webProjects tagged with this topic in the verified catalog.6 projectswebsite-builderProjects tagged with this topic in the verified catalog.2 projectsWebDocumented runtime or deployment platform for this open-source project.6 projects
ITIT - Developers ItaliaFederated from IT - Developers Italia (Italy) in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Website BuilderStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
17793/100Vitality 93/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
elementpath
ItalyMIT

Python library that provides XPath 1.0/2.0/3.0/3.1 parsers and selectors for ElementTree and lxml

Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.4 projects#linuxProjects tagged with this topic in the verified catalog.2 projectsdata-analyticsProjects tagged with this topic in the verified catalog.3 projectsLinuxDocumented runtime or deployment platform for this open-source project.2 projects
ITIT - Developers ItaliaFederated from IT - Developers Italia (Italy) in the EU Open Source Solutions Catalogue. Software type: Library.Stable · Data Analytics · Data CollectionStableStableMarked Stable in the EU OSS Catalogue: considered ready for production use by the publishing public administration.EU OSS Catalogue maturity
9085/100Vitality 85/100Very active. The EU OSS Catalogue vitality index (0–100) is an AGID-compatible score of recent repository activity—commits, releases, and contributor signals—not a quality or security rating.EU OSS Catalogue · AGID-compatibleActivity unavailable
Open sourceIndependent project
Showing 12 of 12